I have a 2002 pontiac grand prix v6 with 152k, i just bought the car and the service engine soon light is on. I brought it to the transmission shop and its for a p1811 and p1887 codes. One being a long shift adapt code and the other a torque converter clutch code. I was told that i could replace those two parts but because the high mileage on the vehichle it may not work. And ide be better off having my transmission rebuilt which will cost 1800 dollars. I cant afford that! What do i do?please help!

SOURCE: how to reset the "service engine soon" light on a 2001 pontiac grand prix gt

you can go to advance auto and use there scanner for free to clear the code its called an obd2 connection or when you disconnect your battery you can touch your black negative cable to your red positive cable that connects to the battery and it will completley drain everything and reset but warning you if your trying to get the car through emissions your gonna have to drive the car 50 or 100 miles after you disconnect the battery each time..

SOURCE: 2002 grand prix runs rough,dies service engine

sounds like you have a vacuum leak, check all the vacuum hoses and replace any broken or kinked ones, also check around the intake manifold gasket for leaks. any air leaks after the air flow meter creates 'un-metered' air which inturn will make the car run rough and stall, hope this helps

Harvey N Tawatao

• 3854 Answers
• Posted on May 26, 2009

SOURCE: Pontiac Montana has computer codes

Most GM it takes about 100 start cycle to clear any DTC codes that do not reoccur. As for the lack of power when accelerating could be a dirty fuel filter and needs to be changed.
As for the EGR Valve code it may be getting carboned up and need to be replaced or cleaned soon with carb cleaner. First try changing the fuel filter for your lack of power.
If you are ever going to have you Montana Rescanned and don't mind spending a few extra dollars, Have a Dirve Cycle DTC test done. http://myweb.accessus.net/~090/dtcobd2n.html
Good luck and hope this helps. Note: The program on the transmission on the Montana thanks to GM and there wisdom was made to slip when the transmission is cold to warm up the drivetrain quicker, which premature failure is common around 150,000 KM or 100,000 Miles just after the warranty. Regular transmission fluid and filter change will help exten the life of the transmission on the Montana.

SOURCE: check engine light came on, code was p0741... the

this is most likely true .try disconnecting the battery positive terminal for 1 minute to see if it will reset itself

SOURCE: how to clear code service engine soon 2002

you need to use an OBDII scan tool that will read any "error" codes and give you the system that will be causing the check engine light to come on. this tool will also allow you to erase the code after you have read it. write the code down as you may have to pinpoint exactly what part may have failed and needs replacing. something as simple as a loose gas cap will cause the check engine light to come on. it could be any of a dozen different emission or ignition sensors that may be bad depending on the error code. all 1996 and newer vehicles sold in the US will have the OBDII system and standard diagnostic/data link connector,which is usually under the driver side of the dash, to plug the scan tool into to read the DTC's(diagnostic trouble codes).